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Voltage - Dual Triode (similar) ·Triode-Triode

ECC804

General-purpose medium-mu dual triode with two similar sections, intended for television-receiver and general amplifier circuitry.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

General-purpose dual triode with identical sections for television receiver circuits.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.0034 S
Amplification factor
18
Max plate voltage
250 V
Max plate dissipation
2 W

Representative section for two identical triodes.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.0034 S
Amplification factor
18
Max plate voltage
250 V
Max plate dissipation
2 W

Second physical triode restored.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterVoltageNominal

    6.3 V

    Nominal

  • HeaterCurrentNominal

    300 mA

    Nominal

  • Maximum Plate Voltage

    250 V

  • Maximum Plate Dissipation

    2 W

Characteristic

  • Transconductance

    3400 µS

    Typical

  • Amplification Factor

    18

    Typical